Calendar

Aug
31
Thu
Biochemistry Seminar – Dr. Wen Jiang @ 111 Parks Hall
Aug 31 @ 11:30 am – 12:30 pm

Title: TBA

Affiliation: Purdue University

Hosted by: Dr. Suo

Sep
1
Fri
Seminar: Designing Surfaces with Extreme Wettabilities – Dr. Anish Tuteja @ E100 Scott Lab
Sep 1 @ 2:00 pm – 3:00 pm

Affiliation: University of Michigan

Hosted By: Professor Bharat Bhushan

Description: In this talk I will discuss the current work in my group on developing surfaces with extreme wettabilities, i.e. surfaces that are either completely wet by, or completely repel, different liquids. The first portion of the talk will cover the design of so called “superomniphobic surfaces” i.e. surfaces which repel all liquids. Designing and producing textured surfaces that can resist wetting by low surface tension liquids such as various oils or alcohols has been a significant challenge in materials science, and no examples of such surfaces exist in nature. As part of this work, I explain how re-entrant surface curvature, in addition to surface chemistry and roughness, can be used to design surfaces that cause virtually all liquids, including oils, alcohols, water, concentrated organic and inorganic acids, bases, solvents, as well as, viscoelastic polymer solutions to roll-off and bounce.

The second portion of my talk will cover the design of the first-ever reconfigurable membranes that, counter-intuitively, are both superhydrophilic (i.e., water contact angles @ 0°) and superoleophobic (i.e., oil contact angles > 150°). This makes these porous surfaces ideal for gravity-based separation of oil and water as they allow the higher density liquid (water) to flow through while retaining the lower density liquid (oil).  These fouling-resistant membranes can separate, for the first time, a range of different oil–water mixtures, including emulsions, in a single-unit operation, with >99.9% separation efficiency, by using the difference in capillary forces acting on the oil and water phases. As the separation methodology is solely gravity-driven, it is expected to be one of the most energy-efficient technologies for oil-water separation.

I will also discuss surfaces with patterned wettability, where both wetting (omniphilic) and non-wetting (omniphobic) domains are fabricated on the same substrate. We use such substrates for fabricating monodisperse, multi-phasic, micro- and nano-particles possessing virtually any desired composition, projected shape, modulus, and dimensions as small as 25 nm. Finally, I will discuss some other areas of current and future research, including the development of ice-phobic coatings that offer one of the lowest reported adhesion strengths with ice.

Oct
2
Mon
Seminar: Eric Ruggiero @ E100 Scott Lab
Oct 2 @ 11:00 am – 12:00 pm

Affiliation: GE Aviation, Cincinnati, OH

Hosted by: Professor Marcelo Dapino

Oct
5
Thu
Biochemistry Seminar – Dr. Natalia Tretyakova @ 111 Parks Hall
Oct 5 @ 11:30 am – 12:30 pm

Title: TBA

Affiliation: University of Minnesota

Hosted by: Dr. Musier-Forsyth

Oct
9
Mon
Analytical/Physical Seminar – Dr. Thorsten Bernhardt @ 2004 Evans Laboratory
Oct 9 @ 4:10 pm – 5:10 pm

Title: TBA

Affiliation: Ulm University

Hosted by: Dr. Zhong

Oct
16
Mon
Analytical/Physical Seminar – Dr. Thomas Rizzo @ 2004 Evans Laboratory
Oct 16 @ 4:10 pm – 5:10 pm

Title: TBA

Affiliation: Encole Polytechnique de Fédérale de Lausanne

Hosted by: Dr. Wysocki

Oct
19
Thu
Biochemistry Seminar – Dr. Lee Woodcock @ 111 Parks Hall
Oct 19 @ 11:30 am – 12:30 pm

Title: TBA

Affiliation: University of South Florida

Hosted by: Dr. Herbert

Oct
23
Mon
Analytical/Physical Seminar – Dr. Chad Rienstra @ 2004 Evans Laboratory
Oct 23 @ 4:10 pm – 5:10 pm

Title: TBA

Affiliation: University of Illinois Urbana-Champaign

Hosted by: Dr. Jaroniec

Oct
24
Tue
Organic and Inorganic Seminar Series – Dr. Jeremiah Gassensmith @ 2004 Evans Laboratory
Oct 24 @ 11:30 am – 12:30 pm

Title: TBA

Affiliation: University of Texas, Dallas

Hosted by: Dr. McGrier

Oct
30
Mon
Analytical/Physical Seminar – Dr. Shelley Claridge @ 1005 Smith Lab
Oct 30 @ 4:10 pm – 5:10 pm

Title: TBA

Affiliation: Purdue University

Hosted by: Dr. Wysocki